* ValueAct Capital Master Fund says pursuant to agreement Morgan Stanley will buy, for the account of ValueAct, up to 6 million shares of Seagate Technology’s common stock

* ValueAct Capital Master Fund says purchases of the stock under the 10b5-1 plan can commence as early as Sept 1, 2017 and will terminate no later than Oct 31, 2017 Source text: [bit.ly/2wupawH] Further company coverage: